Organization of American States Flag, O.A.S.

The OAS was founded on May 5th, 1948 with these 21 charter members:

• Argentina
• Bolivia
• Brazil
• Chile
• Colombia
• Costa Rica
• Cuba
• Dominican Republic
• Ecuador
• El Salvador
• Guatemala
• Haiti
• Honduras
• Mexico
• Nicaragua
• Panama
• Paraguay
• Peru
• United States
• Uruguay
• Venezuela

The following countries joined the Organization of American States (OAS) after the initial creation. The date following the country name is the year that they joined:

• Barbados (1967)
• Trinidad and Tobago (1967)
• Jamaica (1969)
• Grenada (1975)
• Suriname (1977)
• Dominica (1979)
• Saint Lucia (1979)
• Antigua and Barbuda (1981)
• Saint Vincent and the Grenadines (1981)
• Bahamas (1982)
• Saint Kitts and Nevis (1984)
• Canada (1990)
• Belize (1991)
• Guyana (1991)